Description The Jolthead porgy, Calamus bajonado is an ocean-going species of fish in the family Sparidae. In Bermuda, it is known as the Blue bone pory, in the United States, it is also known by the Spanish name Bojanado, in Jamaica, it is one of the species known by the name, Porgi grunt.

Known only from the western Atlantic Ocean, Jolthead porgies are found from Rhode Island and Bermuda south to Brazil. They are abundant in the northern Gulf of Mexico and the West Indies. They have been collected from beds of seagrass, and commonly swim in clear, shallow water up to 150 feet, (though there have been reports of them as deep as 180 and 200 m) where they are normally solitary, but sometimes appear in schools near reefs. They are thought to spawn in July and August.